797448857 has 2 divisors, whose sum is σ = 797448858. Its totient is φ = 797448856.

The previous prime is 797448793. The next prime is 797448871. The reversal of 797448857 is 758844797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 713744656 + 83704201 = 26716^2 + 9149^2 .

It is an emirp because it is prime and its reverse (758844797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 797448857 - 2⁶ = 797448793 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 797448796 and 797448805.

It is not a weakly prime, because it can be changed into another prime (797448887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398724428 + 398724429.

It is an arithmetic number, because the mean of its divisors is an integer number (398724429).

Almost surely, 2^797448857 is an apocalyptic number.

It is an amenable number.

797448857 is a deficient number, since it is larger than the sum of its proper divisors (1).

797448857 is an equidigital number, since it uses as much as digits as its factorization.

797448857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15805440, while the sum is 59.

The square root of 797448857 is about 28239.1369733567. The cubic root of 797448857 is about 927.3299361984.

The spelling of 797448857 in words is "seven hundred ninety-seven million, four hundred forty-eight thousand, eight hundred fifty-seven".